636370056 has 144 divisors (see below), whose sum is σ = 2038446540. Its totient is φ = 178778880.

The previous prime is 636370039. The next prime is 636370073. The reversal of 636370056 is 650073636.

636370056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (636370039) and next prime (636370073).

It can be written as a sum of positive squares in 2 ways, for example, as 504900900 + 131469156 = 22470^2 + 11466^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 636370056.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 213730 + ... + 216686.

Almost surely, 2^636370056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636370056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019223270).

636370056 is an abundant number, since it is smaller than the sum of its proper divisors (1402076484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636370056 is a wasteful number, since it uses less digits than its factorization.

636370056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 636370056 is about 25226.3761963545. The cubic root of 636370056 is about 860.1415198870.

The spelling of 636370056 in words is "six hundred thirty-six million, three hundred seventy thousand, fifty-six".